SCATTERING OF 34.4-MEV ALPHA PARTICLES BY TIN ISOTOPES

The angular distributions of alpha particles elastically and inelastically scattered by 116Sn117Sn118Sn,119Sn and 120Sn have been measured at 34.4 MeV. The angular distributions of the prominent groups corresponding to the quadrupole and octupole excitations were fitted with the results of DWBA predictions. In these calculations Coulomb excitation was found to be important for these nuclei. The extracted deformation parameters β2 and β3 for the even tin isotopes are in good agreement with those obtained by other workers. Both the shapes and magnitudes of the angular distributions of the groups corresponding to the quadrupole and octupole excitations for the odd-mass tin isotopes were found to be very similar to those for the even tin isotopes. Possible hexadecapole excitations are discussed. © 1968, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.